The invention discloses application of a beautiful
millettia root extract in preparation of an anti-
obesity product. The beautiful
millettia root extract comprises at least one of an extract A and an extract B, wherein the preparation process of the extract A comprises the following steps: taking a dispersion liquid containing crude beautiful
millettia root
polysaccharide, adding the dispersion liquid into a
cellulose anion exchange column for purification, eluting with water, and collecting an eluent, so as to obtain the extract A; and the preparation process of the extract B comprises the following steps: taking a dispersion liquid containing crude beautiful millettia root
polysaccharide, adding the dispersion liquid into a
cellulose anion exchange column for purification, eluting the dispersion liquid with a 0.35-0.45 mol / L NaCl solution, and collecting the eluent. Compared with the conventional beautiful millettia root extract, the beautiful millettia root extract disclosed by the invention shows higher
biological activity in the aspect of resisting
obesity, and has a wide application prospect in research and development of anti-
obesity related products.